CN210001830U - high-efficiency coal gasification burner with pulverized coal premixing function - Google Patents
high-efficiency coal gasification burner with pulverized coal premixing function Download PDFInfo
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- CN210001830U CN210001830U CN201920179593.0U CN201920179593U CN210001830U CN 210001830 U CN210001830 U CN 210001830U CN 201920179593 U CN201920179593 U CN 201920179593U CN 210001830 U CN210001830 U CN 210001830U
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Abstract
The utility model provides a take high-efficient coal gasification nozzle that fine coal mixes in advance, including main nozzle, the of starting work's nozzle of ignition, oxygen passageway, the buggy passageway, the nozzle of starting work, ignition nozzle and buggy distributor, wherein, the ignition nozzle sets up the inner chamber center department at main nozzle, the nozzle of starting work, buggy passageway and oxygen passageway have set gradually between ignition nozzle and the main nozzle, the top of buggy passageway stretches out to the outside of main nozzle, the top of the nozzle of starting work stretches out to the outside of buggy passageway, the top of ignition nozzle and the top of the nozzle of starting work are arranged neatly, simultaneously, the top of nozzle of starting work and ignition nozzle sets up in the inside of of starting work's nozzle of igniting, the buggy distributor sets up in the inner chamber of buggy passageway, the utility model discloses can effectively prevent to burn partially, reduce the influence of coal seam fluctuation to furnace flow field, make gasification equipment operation safer and more stable.
Description
Technical Field
The utility model belongs to the technical field of the energy chemical industry, concretely relates to high-efficient coal gasification nozzle that area fine coal mixes in advance.
Background
At present, a coal gasification technology is which is a main approach for cleaning and efficiently utilizing coal, an entrained flow bed dry coal powder gasification technology obtains universal pushing application by the advantages of large unit volume handling capacity, high carbon conversion rate, high gasification strength, energy conservation, environmental protection and the like, core equipment of the dry coal powder gasification technology is a gasification furnace, a coal powder burner is a core component of the gasification furnace, and the performance and the service life of the equipment directly influence the effective running of normal reaction in the gasification furnace, the quality of gasification process products and the long-period stable operation of the gasification process products.
For example, because load difference exists among coal lines, constant fluctuation is inevitably generated in each coal line under the condition of pulverized coal dense phase transportation, the influence of the factors on the hearth flow field of the gasification furnace is large, particularly when a single coal line is blocked or jumped, the fluctuation of the flow field and the temperature field in the gasification furnace is more severe, so that the phenomenon of partial combustion is caused, and the explosion of a water wall of the gasification furnace is caused.
Disclosure of Invention
An object of the utility model is to provide an take fine coal to mix in advance high-efficient coal gasification nozzle, solved that current coal gasification nozzle exists because the single coal line appears blockking up or the skip, cause the phenomenon of burning partially, arouse the problem of gasifier water-cooled wall explosion.
In order to achieve the above purpose, the utility model discloses a technical scheme is:
the utility model provides an take pulverized coal to mix in advance high-efficient coal gasification nozzle in advance, including main nozzle, ignition turn-on ization nozzle, oxygen passageway, buggy passageway, turn-on nozzle, ignition nozzle and buggy distributor, wherein, the ignition nozzle sets up in the inner chamber center department of main nozzle, has set gradually turn-on nozzle, buggy passageway and oxygen passageway between ignition nozzle and the main nozzle;
the top end of the pulverized coal channel extends to the outer side of the main burner, the top end of the start-up burner extends to the outer side of the pulverized coal channel, and the top of the ignition burner and the top of the start-up burner are arranged in an equal alignment manner;
the pulverized coal distributor is arranged in the inner cavity of the pulverized coal channel.
Preferably, a plurality of pulverized coal inlets are uniformly distributed on the top of the pulverized coal channel along the circumferential direction of the pulverized coal channel, and the pulverized coal inlets are communicated with the pulverized coal channel.
Preferably, the included angle α between the axis of the pulverized coal inlet and the axis of the ignition start burner is less than or equal to 30 degrees.
Preferably, the pulverized coal distributor comprises a body with a circular ring structure, and a plurality of pulverized coal holes are uniformly distributed on the surface of the body; the outer wall of the body is fixedly connected with the inner wall of the pulverized coal channel, and the inner wall of the body is connected with the outer wall of the start-up burner.
Preferably, a main oxygen inlet is formed in the side wall of the top of the main burner, and the main oxygen inlet is communicated with the oxygen channel.
Preferably, the included angle β between the gas outlet direction at the tail end of the oxygen channel and the fire-facing end surface at the bottom of the main burner is 60-90 degrees.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides a take fine coal to mix high-efficient coal gasification nozzle of distributor in advance carries out the premix to the buggy through the inside buggy distributor in nozzle passageway, effectively prevents to burn partially, reduces the undulant influence to the furnace flow field of coal seam, makes gasification equipment operation safety and stability more.
And , reasonably arranging the oxygen outlet angle, improving the disturbance intensity of the reaction medium in the furnace, improving the carbon conversion rate and improving the slag catching efficiency of the gasification furnace.
step, the angle of the coal powder inlet is used to reduce the abrasion of coal powder to the channel contact surface
Drawings
Fig. 1 is a schematic structural diagram of a coal gasification burner provided by the present invention;
FIG. 2 is a schematic structural view of a pulverized coal distributor;
the burner comprises a main burner 1, a main burner 2, an ignition start burner 3, a cooling water inlet channel 4, a cooling water return channel 5, an oxygen channel 6, a coal powder channel 7, a start burner 8, an ignition burner 9, a flange 10, a cooling water inlet 11, a cooling water outlet 12, a main oxygen inlet 13, a coal powder inlet 14, a coal powder distributor 14-1, a body 14-2 and coal powder holes.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings, in which the present invention is illustrated at .
As shown in figure 1, the utility model provides a high-efficient coal gasification nozzle of powdered coal premixing distributor, including main nozzle 1, the of starting work of ignition ization nozzle 2, cooling water heat transfer passageway, oxygen passageway 5, buggy passageway 6, the nozzle 7 of starting work, ignition nozzle 8, flange 9, cooling water entry 10, cooling water export 11, main oxygen entry 12, buggy entry 13 and buggy distributor 14, wherein, the cover is equipped with nozzle 7 of starting work, buggy passageway 6, oxygen passageway 5 and main nozzle 1 in proper order on the ignition nozzle 8, and cooling water heat transfer passageway suit is on main nozzle 1.
The top of the pulverized coal channel 6 extends out of the outer side of the main burner 1, the top of the start-up burner 7 extends out of the outer side of the pulverized coal channel 6, and the top of the ignition burner 8 and the top of the start-up burner 7 are arranged in an equal-alignment mode.
The start-up burner 7 and the ignition burner 8 are arranged inside the ignition start-up integral burner 2, are arranged in the center of the inner cavity of the main burner 1 and are coaxially arranged.
The top of the coal powder channel 6 is evenly distributed with a plurality of coal powder inlets 13 along the circumferential direction, and the coal powder inlets 13 are communicated with the coal powder channel 6.
The included angle α between the axis of the pulverized coal inlet 13 and the axis of the ignition start -formed burner 2 is less than or equal to 30 degrees.
The inner cavity of the coal powder channel 6 is provided with a coal powder distributor 14, the coal powder distributor 14 is sleeved on the start-up burner 7, and the coal powder distributor 14 is used for uniformly distributing coal powder from each coal line in the annular coal powder channel 6.
As shown in FIG. 2, the pulverized coal distributor 14 includes a main body 14-1 with a circular ring structure, and a plurality of pulverized coal holes 14-2 are uniformly distributed on the surface of the main body 14-1.
The outer wall of the body 14-1 is fixedly connected with the inner wall of the pulverized coal channel 6, and the inner wall of the body 14-1 is fixedly connected with the outer wall of the start-up burner 7.
The side wall of the top of the main burner 1 is provided with a main oxygen inlet 12, the main oxygen inlet 12 is communicated with the oxygen channel 5, and the included angle β between the gas outlet direction at the tail end of the oxygen channel 5 and the fire facing end surface at the bottom of the main burner 1 is 60-90 degrees.
The main burner 1 is sleeved with a flange 9, the flange 9 is provided with a cooling water outlet 11 and a cooling water inlet 10, wherein the cooling water outlet 11 and the cooling water inlet 10 are communicated with a cooling water heat exchange channel.
The cooling water heat exchange channel comprises a cooling water inlet channel 3 and a cooling water return channel 4, wherein a cooling water outlet 11 is communicated with the cooling water return channel 4; the cooling water inlet 10 is communicated with the cooling water inlet channel 3.
The main burner 1 and the ignition start body burner 2 are both high-temperature nickel-based alloy steels.
The utility model discloses a theory of operation:
before the gasification furnace is ignited, the ignition burner 8 is put into use, and then the start-up burner 7 is ignited by the ignition burner 8 to raise the temperature and pressure. When the coal feeding temperature is reached, coal powder enters the coal powder channel 6 through the coal powder inlet 13 in a downward inclined mode, is circumferentially and uniformly distributed through the distributor 14 in the coal powder channel, and then is mixed with oxygen entering through the main oxygen inlet 12 and descending along the oxygen channel 5 to generate gasification reaction, an inward included angle is formed between the direction of a gas outlet at the tail end of the oxygen channel 5 and the bottom of the main burner 1 towards the fire end face, so that the oxygen is sprayed downwards to collide with the coal powder sprayed downwards vertically, the disturbance intensity of a reaction medium in the furnace is improved, the reaction is more complete, the carbon conversion rate is improved, and the slag catching efficiency of the gasification furnace is improved.
The heat generated by the reaction is taken away by cooling water to protect the burner body from being burnt out due to over-temperature. The coal powder distributor 14 enables the coal powder to be uniformly distributed circumferentially, so that the problem of partial burning is avoided; meanwhile, the influence of the fluctuation of each coal line on the flow field of the hearth can be reduced to the minimum.
Claims (6)
- The high-efficiency coal gasification burner with premixed pulverized coal is characterized by comprising a main burner (1), an ignition start gasification burner (2), an oxygen channel (5), a pulverized coal channel (6), a start burner (7), an ignition burner (8) and a pulverized coal distributor (14), wherein the ignition burner (8) is arranged at the center of an inner cavity of the main burner (1), and the start burner (7), the pulverized coal channel (6) and the oxygen channel (5) are sequentially arranged between the ignition burner (8) and the main burner (1);the top end of the pulverized coal channel (6) extends to the outer side of the main burner (1), the top end of the start-up burner (7) extends to the outer side of the pulverized coal channel (6), the top of the ignition burner (8) and the top of the start-up burner (7) are arranged in an equal alignment mode, and meanwhile, the top of the start-up burner (7) and the top of the ignition burner (8) are arranged in the ignition start-up integration burner (2);the coal powder distributor (14) is arranged in the inner cavity of the coal powder channel (6).
- 2. The pulverized coal premixed high efficiency coal gasification burner as claimed in claim 1, wherein the top of the pulverized coal passageway (6) is evenly distributed with a plurality of pulverized coal inlets (13) along its circumference, and the pulverized coal inlets (13) are communicated with the pulverized coal passageway (6).
- 3. high efficiency coal gasification burner with premixed pulverized coal as claimed in claim 2, characterized in that the included angle α between the axis of the pulverized coal inlet (13) and the axis of the ignition burner (2) is less than or equal to 30 °.
- 4. The pulverized coal premixed high-efficiency coal gasification burner as claimed in claim 1, wherein the pulverized coal distributor (14) comprises a body (14-1) with a circular structure, a plurality of pulverized coal holes (14-2) are uniformly distributed on the surface of the body (14-1), wherein the outer wall of the body (14-1) is fixedly connected with the inner wall of the pulverized coal channel (6), and the inner wall of the body (14-1) is connected with the outer wall of the start-up burner (7).
- 5. The pulverized coal premixed high-efficiency coal gasification burner as claimed in claim 1, wherein a main oxygen inlet (12) is formed in the side wall of the top of the main burner (1), and the main oxygen inlet (12) is communicated with the oxygen channel (5).
- 6. The burner for high-efficiency coal gasification with premixed pulverized coal as claimed in claim 1 or 5, wherein the angle β between the outlet direction of the end gas of the oxygen channel (5) and the bottom fire-facing end face of the main burner (1) is 60-90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920179593.0U CN210001830U (en) | 2019-01-31 | 2019-01-31 | high-efficiency coal gasification burner with pulverized coal premixing function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920179593.0U CN210001830U (en) | 2019-01-31 | 2019-01-31 | high-efficiency coal gasification burner with pulverized coal premixing function |
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| CN210001830U true CN210001830U (en) | 2020-01-31 |
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| CN201920179593.0U Active CN210001830U (en) | 2019-01-31 | 2019-01-31 | high-efficiency coal gasification burner with pulverized coal premixing function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109575997A (en) * | 2019-01-31 | 2019-04-05 | 中国华能集团清洁能源技术研究院有限公司 | A kind of high-effective gas burner and its application method with fine coal premix |
-
2019
- 2019-01-31 CN CN201920179593.0U patent/CN210001830U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109575997A (en) * | 2019-01-31 | 2019-04-05 | 中国华能集团清洁能源技术研究院有限公司 | A kind of high-effective gas burner and its application method with fine coal premix |
| CN109575997B (en) * | 2019-01-31 | 2024-05-28 | 中国华能集团清洁能源技术研究院有限公司 | Efficient coal gasification burner with pulverized coal premixing function and application method thereof |
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